Pernell Roberts was my introduction to the fact that people age.
One night, when I was a teenager, my mom and I were watching TV, and all of a sudden, she wailed, "Pernell Roberts, what happened to you?!" I said, "Who's Pernell Roberts?" The spreading, bald guy on the TV. She remembered him (and lusted a bit, I suspect) looking like that perfect sample that Paul posted.
Now when I see people I haven't seen in several years, every now and then, I say to myself silently, "Pernell Roberts!" I myself have doen a Pernell Roberts, though I do have hair.
R.I.P.